A barometer is used to measure the pressure in the air, Like if there was a Storm coming the barometer can forecast (Predict) The weather in the air
Answer:
3.25 mol CO₂
Explanation:
Step 1: Write the balanced equation
C(s) + O₂(g) ⇒ CO₂(g)
Step 2: Establish the appropriate molar ratio
According to the balanced equation, the molar ratio of O₂ to CO₂ is 1:1.
Step 3: Calculate the number of moles of CO₂ produced from 3.25 moles of O₂
We will use the previously established molar ratio.
3.25 mol O₂ × 1 mol CO₂/ 1 mol O₂ = 3.25 mol CO₂
Answer:
2. All the naturally occurring isotopes of Mg.
Explanation:
You want to know the atomic mass of the magnesium you use in the lab. That’s “natural” magnesium. So, you must use the weighted average of all the naturally occurring isotopes in natural Mg.
1. and 3. are <em>wrong</em>. You won’t get the correct mass for natural Mg if you use only the artificial isotopes for your calculation.
4. is <em>wrong</em>. You must use all the naturally occurring isotopes. The two most abundant isotopes of Mg account for only 90 % of the atoms. If you ignore the other 10 %, your calculation will be wrong.
please mark my answer brainliest...
condition...pressure remains constant.
- for 720 ml temp is 15°...so for
- 960ml temp will be 15/720×960=20°...(.answer for 1st part...)
- for 900cmcube temp is 270°C...so for
- 300cmcube temp will be 270/900×300=90°....(answer for 2nd part)...
- I hope it helps the dear students...and if it is then let me know through ur comments...and please mark my answer as brainliest...plz...
